Sindbad~EG File Manager
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* Auto-save functionality for during quiz attempts.
*
* @module moodle-mod_quiz-autosave
*/
/**
* Auto-save functionality for during quiz attempts.
*
* @class M.mod_quiz.autosave
*/
M.mod_quiz = M.mod_quiz || {};
M.mod_quiz.autosave = {
/**
* The amount of time (in milliseconds) to wait between TinyMCE detections.
*
* @property TINYMCE_DETECTION_DELAY
* @type Number
* @default 500
* @private
*/
TINYMCE_DETECTION_DELAY: 500,
/**
* The number of times to try redetecting TinyMCE.
*
* @property TINYMCE_DETECTION_REPEATS
* @type Number
* @default 20
* @private
*/
TINYMCE_DETECTION_REPEATS: 20,
/**
* The delay (in milliseconds) between checking hidden input fields.
*
* @property WATCH_HIDDEN_DELAY
* @type Number
* @default 1000
* @private
*/
WATCH_HIDDEN_DELAY: 1000,
/**
* The number of failures to ignore before notifying the user.
*
* @property FAILURES_BEFORE_NOTIFY
* @type Number
* @default 1
* @private
*/
FAILURES_BEFORE_NOTIFY: 1,
/**
* The value to use when resetting the successful save counter.
*
* @property FIRST_SUCCESSFUL_SAVE
* @static
* @type Number
* @default -1
* @private
*/
FIRST_SUCCESSFUL_SAVE: -1,
/**
* The selectors used throughout this class.
*
* @property SELECTORS
* @private
* @type Object
* @static
*/
SELECTORS: {
QUIZ_FORM: '#responseform',
VALUE_CHANGE_ELEMENTS: 'input, textarea, [contenteditable="true"]',
CHANGE_ELEMENTS: 'input, select',
HIDDEN_INPUTS: 'input[type=hidden]',
CONNECTION_ERROR: '#connection-error',
CONNECTION_OK: '#connection-ok'
},
/**
* The script which handles the autosaves.
*
* @property AUTOSAVE_HANDLER
* @type String
* @default M.cfg.wwwroot + '/mod/quiz/autosave.ajax.php'
* @private
*/
AUTOSAVE_HANDLER: M.cfg.wwwroot + '/mod/quiz/autosave.ajax.php',
/**
* The delay (in milliseconds) between a change being made, and it being auto-saved.
*
* @property delay
* @type Number
* @default 120000
* @private
*/
delay: 120000,
/**
* A Node reference to the form we are monitoring.
*
* @property form
* @type Node
* @default null
*/
form: null,
/**
* Whether the form has been modified since the last save started.
*
* @property dirty
* @type boolean
* @default false
*/
dirty: false,
/**
* Timer object for the delay between form modifaction and the save starting.
*
* @property delay_timer
* @type Object
* @default null
* @private
*/
delay_timer: null,
/**
* Y.io transaction for the save ajax request.
*
* @property save_transaction
* @type object
* @default null
*/
save_transaction: null,
/**
* Failed saves count.
*
* @property savefailures
* @type Number
* @default 0
* @private
*/
savefailures: 0,
/**
* Properly bound key change handler.
*
* @property editor_change_handler
* @type EventHandle
* @default null
* @private
*/
editor_change_handler: null,
/**
* Record of the value of all the hidden fields, last time they were checked.
*
* @property hidden_field_values
* @type Object
* @default {}
*/
hidden_field_values: {},
/**
* Initialise the autosave code.
*
* @method init
* @param {Number} delay the delay, in seconds, between a change being detected, and
* a save happening.
*/
init: function(delay) {
this.form = Y.one(this.SELECTORS.QUIZ_FORM);
if (!this.form) {
Y.log('No response form found. Why did you try to set up autosave?', 'debug', 'moodle-mod_quiz-autosave');
return;
}
this.delay = delay * 1000;
this.form.delegate('valuechange', this.value_changed, this.SELECTORS.VALUE_CHANGE_ELEMENTS, this);
this.form.delegate('change', this.value_changed, this.SELECTORS.CHANGE_ELEMENTS, this);
this.form.on('submit', this.stop_autosaving, this);
require(['core_form/events'], function(FormEvent) {
window.addEventListener(FormEvent.eventTypes.uploadChanged, this.value_changed.bind(this));
}.bind(this));
this.init_tinymce(this.TINYMCE_DETECTION_REPEATS);
this.save_hidden_field_values();
this.watch_hidden_fields();
},
save_hidden_field_values: function() {
this.form.all(this.SELECTORS.HIDDEN_INPUTS).each(function(hidden) {
var name = hidden.get('name');
if (!name) {
return;
}
this.hidden_field_values[name] = hidden.get('value');
}, this);
},
watch_hidden_fields: function() {
this.detect_hidden_field_changes();
Y.later(this.WATCH_HIDDEN_DELAY, this, this.watch_hidden_fields);
},
detect_hidden_field_changes: function() {
this.form.all(this.SELECTORS.HIDDEN_INPUTS).each(function(hidden) {
var name = hidden.get('name'),
value = hidden.get('value');
if (!name) {
return;
}
if (!(name in this.hidden_field_values) || value !== this.hidden_field_values[name]) {
this.hidden_field_values[name] = value;
this.value_changed({target: hidden});
}
}, this);
},
/**
* Initialise watching of TinyMCE specifically.
*
* Because TinyMCE might load slowly, and after us, we need to keep
* trying, until we detect TinyMCE is there, or enough time has passed.
* This is based on the TINYMCE_DETECTION_DELAY and
* TINYMCE_DETECTION_REPEATS properties.
*
*
* @method init_tinymce
* @param {Number} repeatcount The number of attempts made so far.
*/
init_tinymce: function(repeatcount) {
if (typeof window.tinyMCE === 'undefined') {
if (repeatcount > 0) {
Y.later(this.TINYMCE_DETECTION_DELAY, this, this.init_tinymce, [repeatcount - 1]);
} else {
Y.log('Gave up looking for TinyMCE.', 'debug', 'moodle-mod_quiz-autosave');
}
return;
}
Y.log('Found TinyMCE.', 'debug', 'moodle-mod_quiz-autosave');
this.editor_change_handler = Y.bind(this.editor_changed, this);
if (window.tinyMCE.onAddEditor) {
window.tinyMCE.onAddEditor.add(Y.bind(this.init_tinymce_editor, this));
} else if (window.tinyMCE.on) {
var startSaveTimer = this.start_save_timer_if_necessary.bind(this);
window.tinyMCE.on('AddEditor', function(event) {
event.editor.on('Change Undo Redo keydown', startSaveTimer);
});
}
},
/**
* Initialise watching of a specific TinyMCE editor.
*
* @method init_tinymce_editor
* @param {EventFacade} e
* @param {Object} editor The TinyMCE editor object
*/
init_tinymce_editor: function(e, editor) {
Y.log('Found TinyMCE editor ' + editor.id + '.', 'debug', 'moodle-mod_quiz-autosave');
editor.onChange.add(this.editor_change_handler);
editor.onRedo.add(this.editor_change_handler);
editor.onUndo.add(this.editor_change_handler);
editor.onKeyDown.add(this.editor_change_handler);
},
value_changed: function(e) {
var name = e.target.getAttribute('name');
if (name === 'thispage' || name === 'scrollpos' || (name && name.match(/_:flagged$/))) {
return; // Not interesting.
}
// Fallback to the ID when the name is not present (in the case of content editable).
name = name || '#' + e.target.getAttribute('id');
Y.log('Detected a value change in element ' + name + '.', 'debug', 'moodle-mod_quiz-autosave');
this.start_save_timer_if_necessary();
},
editor_changed: function(editor) {
Y.log('Detected a value change in editor ' + editor.id + '.', 'debug', 'moodle-mod_quiz-autosave');
this.start_save_timer_if_necessary();
},
start_save_timer_if_necessary: function() {
this.dirty = true;
if (this.delay_timer || this.save_transaction) {
// Already counting down or daving.
return;
}
this.start_save_timer();
},
start_save_timer: function() {
this.cancel_delay();
this.delay_timer = Y.later(this.delay, this, this.save_changes);
},
cancel_delay: function() {
if (this.delay_timer && this.delay_timer !== true) {
this.delay_timer.cancel();
}
this.delay_timer = null;
},
save_changes: function() {
this.cancel_delay();
this.dirty = false;
if (this.is_time_nearly_over()) {
Y.log('No more saving, time is nearly over.', 'debug', 'moodle-mod_quiz-autosave');
this.stop_autosaving();
return;
}
Y.log('Doing a save.', 'debug', 'moodle-mod_quiz-autosave');
if (typeof window.tinyMCE !== 'undefined') {
window.tinyMCE.triggerSave();
}
// YUI io.form incorrectly (in my opinion) sends the value of all submit
// buttons in the ajax request. We don't want any submit buttons.
// Therefore, temporarily change the type.
// (Yes, this is a nasty hack. One day this will be re-written as AMD, hopefully).
var allsubmitbuttons = this.form.all('input[type=submit], button[type=submit]');
allsubmitbuttons.setAttribute('type', 'button');
this.save_transaction = Y.io(this.AUTOSAVE_HANDLER, {
method: 'POST',
form: {id: this.form},
on: {
success: this.save_done,
failure: this.save_failed
},
context: this
});
// Change the button types back.
allsubmitbuttons.setAttribute('type', 'submit');
},
save_done: function(transactionid, response) {
var autosavedata = JSON.parse(response.responseText);
if (autosavedata.status !== 'OK') {
// Because IIS is useless, Moodle can't send proper HTTP response
// codes, so we have to detect failures manually.
this.save_failed(transactionid, response);
return;
}
if (typeof autosavedata.timeleft !== 'undefined') {
Y.log('Updating timer: ' + autosavedata.timeleft + ' seconds remain.', 'debug', 'moodle-mod_quiz-timer');
M.mod_quiz.timer.updateEndTime(autosavedata.timeleft);
}
Y.log('Save completed.', 'debug', 'moodle-mod_quiz-autosave');
this.save_transaction = null;
if (this.dirty) {
Y.log('Dirty after save.', 'debug', 'moodle-mod_quiz-autosave');
this.start_save_timer();
}
if (this.savefailures > 0) {
Y.one(this.SELECTORS.CONNECTION_ERROR).hide();
Y.one(this.SELECTORS.CONNECTION_OK).show();
this.savefailures = this.FIRST_SUCCESSFUL_SAVE;
} else if (this.savefailures === this.FIRST_SUCCESSFUL_SAVE) {
Y.one(this.SELECTORS.CONNECTION_OK).hide();
this.savefailures = 0;
}
},
save_failed: function() {
Y.log('Save failed.', 'debug', 'moodle-mod_quiz-autosave');
this.save_transaction = null;
// We want to retry soon.
this.start_save_timer();
this.savefailures = Math.max(1, this.savefailures + 1);
if (this.savefailures === this.FAILURES_BEFORE_NOTIFY) {
Y.one(this.SELECTORS.CONNECTION_ERROR).show();
Y.one(this.SELECTORS.CONNECTION_OK).hide();
}
},
is_time_nearly_over: function() {
return M.mod_quiz.timer && M.mod_quiz.timer.endtime &&
(new Date().getTime() + 2 * this.delay) > M.mod_quiz.timer.endtime;
},
stop_autosaving: function() {
this.cancel_delay();
this.delay_timer = true;
if (this.save_transaction) {
this.save_transaction.abort();
}
}
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Sindbad File Manager Version 1.0, Coded By Sindbad EG ~ The Terrorists